[ 2173.866195][ T8727] br0: port 1(dummy0) entered blocking state
[ 2173.866387][ T8727] br0: port 1(dummy0) entered disabled state
[ 2173.866558][ T8727] dummy0: entered allmulticast mode
[ 2173.867966][ T8727] dummy0: entered promiscuous mode
[ 2173.899785][ T8728] br0: port 1(dummy0) entered blocking state
[ 2173.899967][ T8728] br0: port 1(dummy0) entered forwarding state
[ 2176.297131][   T67] dummy0: left allmulticast mode
[ 2176.297322][   T67] dummy0: left promiscuous mode
[ 2176.297554][   T67] br0: port 1(dummy0) entered disabled state